<template>
  <div v-if="time !== false && goodsList && goodsList.length" class="seckill-container w">
    <div class="seckill-hd">
      <router-link to="/seckill" class="seckill-hd-a">
        <div class="sk-title">限时抢购</div>
        <div class="sk-sub-title">FLASH DEALS</div>
        <i class="iconfont ea-icon-lightning sk-icon"></i>
        <div class="sk-desc">
          {{ parseInt(timeLine.distance_time) === 0 ? (onlyOne ? '本轮距离结束还剩' : '距离下一轮开始还有') : '距开始' }}
        </div>
        <div class="sk-time">
          <div class="time-item"><span class="time-text">{{ times.hours }}</span></div>
          <div class="time-item"><span class="time-text">{{ times.minutes }}</span></div>
          <div class="time-item"><span class="time-text">{{ times.seconds }}</span></div>
        </div>
      </router-link>
    </div>
    <div class="seckill-bd">
      <swiper :options="swiperOptions">
        <swiper-slide v-for="(goods, index) in goodsList" :key="index" class="goods-item">
          <router-link :to="'/goods/' + goods.goods_id + '?sku_id=' + goods.sku_id" class="goods-item-a" target="_blank">
            <div class="goods-item-img">
              <img :src="goods.goods_image" :alt="goods.goods_name">
            </div>
            <p class="goods-item-name">{{ goods.goods_name }}</p>
            <div class="goods-item-price">
                <span class="goods-item-price-new" :title="goods.seckill_price | unitPrice" style="white-space: nowrap;overflow: hidden;text-overflow: ellipsis;">
                  <i>¥</i>
                  <span>{{ goods.seckill_price | unitPrice }}</span>
                </span>
              <span class="goods-item-price-origin">
                <span style="display:inline-block;width:70px;white-space: nowrap;overflow: hidden;text-overflow: ellipsis;text-decoration:line-through;" :title="goods.original_price | unitPrice">
                  <i>¥</i>{{ goods.original_price | unitPrice }}
                </span>
              </span>
            </div>
          </router-link>
        </swiper-slide>
        <div class="swiper-button-prev swiper-button-white" slot="button-prev"></div>
        <div class="swiper-button-next swiper-button-white" slot="button-next"></div>
      </swiper>
    </div>
  </div>
</template>

<script>
import * as API_Promotions from '../../api/promotions'
import { Foundation } from '../../../ui-utils'

export default {
  name: 'index-seckill',
  data() {
    return {
      // 时间
      time: false,
      // 商品列表
      goodsList: '',
      // 时间
      times: {
        hours: '00',
        minutes: '00',
        seconds: '00'
      },
      // 是否只有一场
      onlyOne: false,
      // 当前这一场的时刻信息
      timeLine: '',
      // swiper配置
      swiperOptions: {
        autoplay: false,
        simulateTouch: false,
        slidesPerView: 5,
        slidesPerGroup: 5,
        navigation: {
          nextEl: '.swiper-button-next',
          prevEl: '.swiper-button-prev'
        }
      }
    }
  },
  mounted() {
    this.GET_TimeLine()
  },
  methods: {
    /** 开始倒计时 */
    startCountDown() {
      this.interval = setInterval(() => {
        let { time } = this
        if (time <= 0) {
          clearInterval(this.interval)
          this.$alert(this.onlyOne ? '本轮限时抢购已结束！' : '下一轮限时抢购已经开始啦！请确认查看', function() {
            location.reload()
          })
          return false
        }
        time -= 1
        const timeText = Foundation.countTimeDown(time)
        this.$set(this, 'times', Foundation.countTimeDown(time))
        this.$set(this, 'time', time)
      }, 1000)
    },
    /** 获取时间段 */
    GET_TimeLine() {
      API_Promotions.getSeckillTimeLine().then(response => {
        if (!response || !response.length) {
          return
        }
        response = response.sort((x, y) => (Number(x.time_text) - Number(y.time_text)))
        const onlyOne = response.length === 1
        this.onlyOne = onlyOne
        this.time = parseInt(response[0].distance_time) !== 0 ? response[0].distance_time : onlyOne ? Foundation.theNextDayTime() : response[1].distance_time
        this.startCountDown()
        this.timeLine = response[0]
        this.GET_GoodsList(response[0].time_text)
      })
    },
    /** 获取商品列表 */
    GET_GoodsList(range_time) {
      API_Promotions.getSeckillTimeGoods({ range_time }).then(response => {
        this.goodsList = response.data
      })
    }
  },
  destroyed() {
    this.interval && clearInterval(this.interval)
  }
}
</script>

<style lang="scss" scoped>
@import "../../assets/styles/color";

.seckill-container {
  height: 275px;
  margin: 0 auto;
  background-color: #fff;
  overflow: hidden;
}

.seckill-hd {
  position: relative;
  float: left;
  width: 190px;
  height: 275px;
  background: $color-main;
  color: #fff;

  .seckill-hd-a {
    display: block;
    width: 100%;
    height: 100%;
    color: #fff;
  }

  .sk-title {
    position: absolute;
    left: 0;
    width: 100%;
    text-align: center;
    top: 42px;
    font-size: 34px;
    color: #eee;
  }

  .sk-sub-title {
    position: absolute;
    left: 0;
    width: 100%;
    text-align: center;
    top: 90px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 20px;
  }

  .sk-icon {
    position: absolute;
    left: 75px;
    top: 126px;
    display: block;
    font-size: 30px;
  }

  .sk-desc {
    position: absolute;
    left: 0;
    width: 100%;
    text-align: center;
    top: 170px;
    font-size: 16px;
  }

  .sk-time {
    position: absolute;
    top: 212px;
    left: 25px;
    height: 40px;
  }

  .time-item {
    position: relative;
    float: left;
    width: 40px;
    height: 40px;
    text-align: center;
    background-color: #2f3430;
    margin-right: 11px;

    span {
      position: relative;
      line-height: 40px;
      font-weight: bold;
      font-size: 20px;
    }

    &:after {
      content: ':';
      position: absolute;
      top: 11px;
      right: -9px;
      color: #ffffff;
      font-size: 16px;
    }

    &:last-child {
      margin-right: 0;

      &:after {
        content: none;
      }
    }
  }
}

.seckill-bd {
  .goods-item {
    position: relative;
    float: left;
    width: 200px;
    height: 275px;

    &::after {
      content: '';
      display: block;
      position: absolute;
      top: 0;
      right: 0;
      width: 1px;
      height: 275px;
      background: #f0f0f0;
    }
  }

  .goods-item-a {
    position: relative;
    display: block;
    width: 190px;
    height: 275px;
    text-align: center;
    margin: auto;
  }

  .goods-item-img {
    position: absolute;
    width: 140px;
    height: 140px;
    left: 50%;
    margin-left: -70px;
    top: 40px;

    img {
      width: 100%;
      height: 100%;
    }
  }

  .goods-item-name {
    position: absolute;
    top: 190px;
    left: 0;
    width: 160px;
    padding: 0 15px;
    line-height: 30px;
    -o-text-overflow: ellipsis;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
  }

  .goods-item-price {
    position: absolute;
    left: 15px;
    top: 230px;
    width: 160px;
    height: 20px;
    padding: 1px;
    background: $color-main;
    line-height: 20px;

    i {
      margin-right: 3px;
      font-family: arial;
      font-weight: 400;
      font-size: 12px;
    }
  }

  .goods-item-price-new {
    float: left;
    width: 80px;
    height: 20px;
    text-align: center;
    color: #fff;
    font-size: 12px;
    font-weight: bold;
  }

  .goods-item-price-origin {
    float: left;
    width: 80px;
    height: 20px;
    background: #fff;
    text-align: center;
    color: #b7bcb8;
    font-size: 12px;
    text-decoration: line-through;
  }

  .swiper-button-prev, .swiper-button-next {
    width: 20px;
    height: 40px;
    background-color: rgba(0, 0, 0, .15);
    z-index: 20;
    background-size: 50%;

    &.swiper-button-disabled {
      pointer-events: auto;
    }
  }
}
</style>
